DMRC Electrical Engineering Paper-1 2016

Instructions

For the following questions answer them individually

Question 91

A 3-phase delta connected squirrel cage induction motor when started with a DOL starter has a starting torque of 600 NM. Its starting torque when star delta starter is used:

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Question 92

Making current of a circuit breaker refers to:

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Question 93

In case of a ‘High Voltage DC’ transmission, how many minimum conductors are required?

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Question 94

Which of the following motor has squirrel cage winding on the stator:

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Question 95

In order to switch-off and EHV circuit for maintenance, the following sequence is adopted:

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Question 96

For the circuit given in the fig, the thevenis’s voltage and resistance as seen at AB are represented by:

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Question 97

Why are shunt reactors connected at the receiving end of long transmission line system:

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Question 98

A 10 Ω resistor is connected in parallel with a 15Ω resistor and the combination in series with a 12 Ω resistor. The equivalent resistance of the circuit is:

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Question 99

A nickel coil has a resistance of 13 Ω at 50°C. If the temperature coefficient of resistance at 0°C is 0.006/°C, the resistance at 0°C is:

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Question 100

The energy used by a 1.5kW heater in 5 minutes is:

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